Java Data Types Tutorial
PRIMITIVE DATA TYPES
• Primitive types
– “building blocks” for more complicated types
• Java is strongly typed
– All variables in a Java program must have a type
• Java primitive types
– portable across computer platforms that support Java
TYPE | Size in Bytes | VALUES |
boolean | 1 | true or false |
Byte | 1 | –128 to +127 (–27 to 27 – 1) |
Char | 2 | ’u0000’ to ’uFFFF’ (0 to 65535) |
short | 2 | –32,768 to +32,767 (–215 to 215 – 1) |
Int | 4 | –2,147,483,648 to +2,147,483,647 (–231 to 231 – 1) |
Float | 4 | -ive range:–3.4028234663852886E+38 to –1.40129846432481707e–45 +ive range:1.40129846432481707e–45 to 3.4028234663852886E+38 |
Long | 8 | –9,223,372,036,854,775,808 to +9,223,372,036,854,775,807 (–263 to 263 – 1) |
Double | 8 | -ive range: –1.7976931348623157E+308 to –4.94065645841246544e–324 +ive range: 4.94065645841246544e–324 to 1.7976931348623157E+308 |
